Cermet

Group 4 Leader : Matthew Lu

Members : Rafael De JesusAlexander Go Tian

Karl OngRobert ng

What is a cermet ?

-A material consisting of processed ceramic particles bonded with metal and used in high-strength and high-

temperature applications. Also called ceramal.

What is it made of ?

-A cermet is a composite material composed of ceramic (cer) and metallic (met) materials.

-A cermet is ideally designed to have the optimal properties of both a ceramic, such as high temperature resistance and hardness, and those of a metal, such as the ability to undergo plastic deformation.

-The metal is used as a binder for an oxide, boride, or carbide. Generally, the metallic elements used are nickel, molybdenum, and cobalt.

-Depending on the physical structure of the material, cermets can also be metal matrix composites, but cermets are usually less than 20% metal by volume .

Applications of cermets -Cermets were first used extensively in

ceramic-to-metal joint applications.

-Construction of vacuum tubes was one of the first critical systems, with the electronics industry employing and developing such seals.

-German scientists recognized that vacuum tubes with improved performance and reliability could be produced by substituting ceramics for glass.

-Ceramic tubes can be outgassed at higher temperatures. Because of the high-temperature seal, ceramic tubes withstand higher temperatures than glass tubes.

Cermet

-Ceramic tubes are also mechanically stronger and less sensitive to thermal shock than glass tubes. Today, cermet vacuum tube coatings have proved to be key to solar hot water systems

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